$ git clone -n https://src.fedoraproject.org/rpms/erlang-ebloom.git /var/lib/mock/f41-build-820076-152074/root/chroot_tmpdir/scmroot/erlang-ebloom
Cloning into '/var/lib/mock/f41-build-820076-152074/root/chroot_tmpdir/scmroot/erlang-ebloom'...
$ git fetch origin 654b34ebf3fafd2a40e12e453e69923fd511a690:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-ebloom
 * [new ref]         654b34ebf3fafd2a40e12e453e69923fd511a690 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 654b34e Use Rebar3